Draft regulator



March 1, 1933. a HAY 1,900,340

DRAFT REGULATOR Filed Dec. 21, 1931 2 Sheets-Sheet l March 7, 1933;. I HAYNE 1,960,340

DRAFT REGULATOR Filed Dec. 21, 1931 2 Sheets-Sheet 2 Patented Mar. 7, 1933 UNITED STATES ERNEST s. HAYNE, or BIRMINGHAM, nrnee vmrnssienon ononn miitni'iozfoian r. LARGE AND ONE-THIRD T0 0. c. HAYNERBQTL'I-IOF?BIRMINGHAM; :ALAIBAEA,

DRAFT REGULATOR- Application filed December 21, 1931. 'SeriaI No. 582,493.

For the sake of illustration, it mightbe stated that in locomotive draft regulators of known construction, the normal formation of the jet of steam issuing from the exhaust nozzel disposed within the smoke box of the locomotive becomes distorted and takes an elongated or oval formation, with the result that certain of the boiler tubes that are not in the direct line of forced draft, becomes cool which causes an uneven burning of the fire within the fire box of the boiler. 7

It is therefore the primary object of the present invention, to provide means whereby the area of the exhaust nozzle located within the smoke box, may be varied without any appreciable change in the general outline of the jet of steam, thereby causing an even draft through all of the tubes of the boiler.

Another object of the invention is the provision of a draft regulator of this character which may be readily and easily installed, eliminating the necessity of making extensive alterations in the usual nozzel construction, to apply the device.

A still further object of the invention is to provide an operating means for operating the control device, the operating means controlled from a point Within the engine cab, and at the will of the engineer.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts-and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings:

Figure 1 is a vertical sectional view through the smoke box of a locomotive, illustrating aidevice constructed in accordance with the invention as applied to the exhaust nozzel thereof.

Figure 2 is a plan view of a nozzle struction, the same being Provided W ith tubes 6 that extend to the'smokej box 7'of the boiler.

equipped with a regulator constructed-inaccordance with the lnventlon. 1

Figure '3 -1s a VBI'tICal j'secti'onal view throu'gh'ythenozzle. V M

F gure 4 is a vertical sectional view'taken 'at-r1ght'angles to'Fi-gure 3.

Referring to the drawings in detail,"=the reference character 5 designates" the boiler of a locomotive, whichis offtheusual ,con-

Positioned within the smoke box is 'an'exhaust steamnozzle- 8,the' steam nozzle being of adiameter approximately one inch greater-than the'exhaust steam nozzle no'w in use, for purposes to be hereinafter fullydescribed. V

more

"Formedintegral with'the 'steamnozzle -8,

are supporting members 9 that exte'ndlatelrally from the ':nozzle,,at points substantially intermediatethe ends of the nozzle. These supporting "members, provide supports for the pivoted links 10,; that have their inner ends disposed 'near thegnozzlef while the outer ends thereof {extend beyond the endsofi thei suppo'rting members 9,where they have pivotal COIlIlQClJlOI1 W1thth6 curved levers 11 that in tur'n are connected at th'eir inner ends, with the bar 12 which extends through an opening in theside of the noz zle.

The inner ends of 1 the p'iv'o ted links- 10,

V-ha've pivotal: connection with the curved levers 13, which are pivotally connected with the. bar 14 disposed-directly "opposite 5 to the bar 12, and extended through an opening in the side of the nozzle, cooperating with the bar 12 7inlvarying the area of the nozzle. V

vlhese bars 12 and 1 1 are substantially one and. one-half, incheswinnwidth'," with the result that when the bars I are moved 'to the limits oftheir'inward movements, they will contact .I at a point substantially fce'ntra'lly .of; the. nozzle, and reducethe entire area of the nozzle by several square inches, with the result that the 1 area of the nozzle will' be Zapipro ximately equal to. theflarea of the exhaust steam nozzle now in common use;

jlZVhen the bars 12 and l l are moved to the limits of their outward movements, the area of the nozzle will be increased approximately the same as by one inch increase in diameter thereby reducing the forced draft caused by the steam passing through the nozzle.

An operating rod indicated by the reference character 15 connects with one end of the bar 12, and passes through an opening in the wall ofthe smoke box, where it has pivotal connection with the bell crank lever 16, to which the rod 17 is connected, there being provided a hand lever 18 at one end of the rod 17, the lever 18 being positioned within the engine cab in easy access to the engineer.

A rack 19 is provided adjacent to the lever 18, so that the bars 12 and 14 may be moved to various positions of adjustment, and locked in such positions.

In the use of the device, assuming that the engineisdrifting, whereupon a forced draft is unnecessary for the cflicient runningof the engine, the bars 12 and 14 are moved to their outermost positions, thereby increasing .the area of the nozzle and reduce the force of steam passing through the nozzle.

Should it be desired to increase the forced draft, the bars 12 and 14 are moved inwardly to reduce the area of the nozzle and restrict the passage of steam, causing a forced draft, which is necessary on a grade wherein it is desired to generate steam rapidly.

Due to the construction shown and described, it will be seen that although the area of the nozzle maybe decreased, the jet of steam issuing from the nozzle is circular in formation to the end that the draft through the various tubes of the boiler is equal, thereby eliminating any possibility of cooling certain of the tubes of the boiler by reducing the diameter of the nozzle, as is common practice in draft regulating nozzles.

It might be further stated that with a device of this character, an appreciable saving in fuel is assured, and the efficiency of the locomotive greatly increased.

; Having thus described the invention what is claimed is.

' Iclaim:

, The combination with the exhaust nozzle of a locomotive, said nozzle having circular openingsformed in opposite sides thereof,

of a draft regulator comprising bars circu- .larincross section,'operating through the openings in opposite directions and in alignment with each other adjusting the area of the nozzle, and means for operating the bars simultaneously.

,In testimony that I claim the foregoing as my own, I have hereto affixed my signature.

ERNEST S. HAYN E. 

